Question

Why decompoisition reactions are called opposite of combination
reactions ?
Write the equations for these reactions discuss the importance of
decomposition reaction in metal industries with three points.
# ans​

Answer 1

Answer:

Hindi composition reactions the compounds breakdown to form subsequent compounds where as in combination reaction different compounds are elements combined together to form a single compound.

CaCO3 +∆ ---> CaO + CO2

is a decomposition reaction.

3H2 + N2 -----> 2NH3

is a combination reaction.

1. we decompose ores of metals to obtain pure metal from ore
2. many of the compounds are formed by decomposition of some complex compounds
3. the decomposition reaction to obtain the metal from ore is the most simple method to obtain necessary metal

Answer 2

Answer of your question is in the attachment

Hope it helps you!